CVE-2017-6951

kernel: NULL pointer dereference in keyring_search_aux function

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The keyring_search_aux function in security/keys/keyring.c in the Linux kernel through 3.14.79 allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a request_key system call for the "dead" type.

La función keyring_search_aux en security/keys/keyring.c en el kernel de Linux hasta la versión 3.14.79 permite a usuarios locales provocar una denegación de servicio (referencia a puntero NULL y OOPS) a través de una llamada al sistema request_key para el tipo "muerte".

The keyring_search_aux function in security/keys/keyring.c in the Linux kernel allows local users to cause a denial of service via a request_key system call for the "dead" key type.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-03-16 CVE Reserved
2017-03-16 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (9)

URL	Tag	Source
http://www.securityfocus.com/bid/96943	Third Party Advisory
http://www.spinics.net/lists/keyrings/msg01845.html	Mailing List
http://www.spinics.net/lists/keyrings/msg01846.html	Mailing List
http://www.spinics.net/lists/keyrings/msg01849.html	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2017:1842	2018-01-05
https://access.redhat.com/errata/RHSA-2017:2077	2018-01-05
https://access.redhat.com/errata/RHSA-2017:2669	2018-01-05
https://access.redhat.com/security/cve/CVE-2017-6951	2017-09-06
https://bugzilla.redhat.com/show_bug.cgi?id=1433252	2017-09-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 3.14.79 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.14.79"		-		Affected